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    <title>ShellCheck: SC2186 – tempfile is deprecated. Use mktemp instead.</title>
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    <h1>SC2186 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2186">See this page on GitHub</a>
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    <h2 id="tempfile-is-deprecated-use-mktemp-instead">tempfile is
deprecated. Use mktemp instead.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2186.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="va">tmp</span><span class="op">=</span><span class="va">$(</span><span class="fu">tempfile</span><span class="va">)</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2186.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="va">tmp</span><span class="op">=</span><span class="va">$(</span><span class="fu">mktemp</span><span class="va">)</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p><code>tempfile</code> is a Debian specific utility for creating
temporary files. Its man page notes:</p>
<blockquote>
<p>tempfile is deprecated; you should use mktemp(1) instead.</p>
</blockquote>
<p>Neither <code>tempfile</code> nor <code>mktemp</code> are POSIX, but
<code>tempfile</code> is Debian specific while <code>mktemp</code> works
on GNU, OSX, BusyBox, *BSD and Solaris.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>ShellCheck will not recognize when a function overrides this
name.</p>
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